521960001 has 16 divisors (see below), whose sum is σ = 742616640. Its totient is φ = 325140480.

The previous prime is 521959943. The next prime is 521960069. The reversal of 521960001 is 100069125.

It is a de Polignac number, because none of the positive numbers 2^k-521960001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (521960071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58560 + ... + 66881.

It is an arithmetic number, because the mean of its divisors is an integer number (46413540).

Almost surely, 2^521960001 is an apocalyptic number.

It is an amenable number.

521960001 is a deficient number, since it is larger than the sum of its proper divisors (220656639).

521960001 is a wasteful number, since it uses less digits than its factorization.

521960001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125536.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 521960001 is about 22846.4439464876. The cubic root of 521960001 is about 805.1542217030.

The spelling of 521960001 in words is "five hundred twenty-one million, nine hundred sixty thousand, one".